Abstract

The pulsing random lasing from the Rh6G solution with TiO₂ scattering particles is investigated by solving Maxwell’s equations and rate equations of electronic population simultaneously. The pumping rate is described by a time function with duration of tens or hundreds of femtoseconds. A one-dimensional (1D) dispersive model is proposed to explain the experiment results. The results indicate that although the dispersion in optical domain is relatively small, the random lasing depends strongly on the pumping process pumped by femtosecond-lasing pulses.

© 2012 Optical Society of America